module teapo.storage.attached.dom {

​

  export class LoadStorage implements attached.LoadStorage {

​

    editedUTC: number;

​

    private _byName: { [fullPath: string]: HTMLElement; } = {};

​

    constructor(

      private _parentElement: HTMLElement,

      private _document: { createElement(tag: string): HTMLElement; }) {

​

      // populate editedUTC from corresponding attribute

      var editedUTCValue = this._parentElement.getAttribute('data-edited-utc');

      if (editedUTCValue) {

        try {

          this.editedUTC = parseInt(editedUTCValue);

        }

        catch (parseEditedUTCError) {

          console.log('parsing editedUTC ' + parseEditedUTCError);

        }

      }

    }

​

    load(recipient: LoadStorageRecipient): void {

      this._loadFromElement(this._parentElement, recipient);

      var updater = new UpdateStorage(this._parentElement, this._byName, this._document);

      recipient.completed(updater);

    }

​

    migrate(

      editedUTC: number,

      filesByName: { [fullPath: string]: { [propertyName: string]: string; }; },

      callback: (error: Error, updater: attached.UpdateStorage) => void): void {

​

      this._wipeExistingElement();

      if (editedUTC)

        this._parentElement.setAttribute('data-edited-utc', editedUTC + '');

      this.editedUTC = editedUTC;

      //alert('migrate(' + editedUTC + ', ' + JSON.stringify(filesByName) + ')\n' + this._parentElement.outerHTML);

​

​

      if (filesByName) {

        for (var fullPath in filesByName) if (filesByName.hasOwnProperty(fullPath)) {

          var element = UpdateStorage.createElement(this._parentElement, fullPath, this._document);

          this._byName[fullPath] = element;

        }

      }

​

      var updater = new UpdateStorage(this._parentElement, this._byName, this._document);

​

      callback(null, updater);

    }

​

    private _wipeExistingElement() {

      // clear out the attributes